Lexmark OptraTM manual Operator Panel Service Check, 4026-0XX, Diagnostic Information

4026-0XX

Operator Panel Service Check

1

FRU	Action
Operator	LEDs
Panel Assem-	Be sure the operator panel cable is properly
bly	seated in J5 on the controller board.
	Run POST and check each LED for proper
	operation.
	If more than one LED does not light or an indi-
	vidual LED stays on solid during POST, replace
	the following FRUs one at a time in the order
	shown:
	Controller board
	Operator panel
	If all LEDs are very dim and operate erratically
	during POST or all LEDs come on and stay on
	solid during POST replace the following FRUs
	one at a time in the order shown:
	Operator panel assembly
	Controller board
	If none of the LEDs are on, be sure +5 V dc is
	present at J1-2 on the controller board. If cor-
	rect, replace the operator panel assembly. If
	incorrect, replace the controller board.
	If all the LEDs come on and remain on, replace
	the following FRUs one at a time in the order
	shown:
	Operator Panel Assembly
	Controller Board
	Button Inoperative
	Disconnect the operator panel cable at J5 on the
	controller board. Check the continuity between
	J5-5 and J5-6 on the cable as you press the but-
	ton. The meter should read from approximately
	10K ohms to approximately zero ohms when the
	button is pressed.
	If the continuity is incorrect, replace the operator
	panel assembly. If correct, replace the following
	FRUs one at a time in the order shown:
	Operator Panel Assembly
	Controller Board

Diagnostic Information 2-27